YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | 27.00 | 32.19 | b | 34.93 | c | 47.83 | 57.90 | 66.90 | 66.03 | 69.13 | 62.60 | 49.13 | 32.73 | 30.68 | 48.09 | |||||||||||
1960 | 26.58 | 29.75 | a | 37.32 | 48.11 | c | 54.42 | 68.97 | 67.06 | 67.16 | 61.00 | 49.45 | 36.53 | 26.94 | 47.77 | |||||||||||
1961 | 26.84 | 31.39 | 38.87 | 44.67 | 50.10 | 58.45 | a | 66.71 | 68.13 | 61.10 | 48.30 | a | 34.43 | 33.42 | 46.87 | |||||||||||
1962 | 23.74 | 36.29 | 35.19 | 49.27 | 54.61 | 61.20 | 67.24 | b | 66.13 | 61.67 | 50.16 | 38.40 | 31.00 | 47.91 | ||||||||||||
1963 | 19.48 | 30.71 | 38.32 | 49.37 | 56.58 | 62.93 | 67.32 | 62.19 | 59.10 | 49.26 | 38.00 | 25.00 | 46.52 | |||||||||||||
1964 | 20.77 | 22.17 | 34.10 | 44.30 | 55.45 | 62.96 | c | 67.29 | 65.35 | 61.83 | 43.93 | c | 34.80 | 27.77 | 45.06 | |||||||||||
1965 | 28.91 | h | 26.82 | 30.67 | a | 46.50 | 54.16 | 64.33 | 70.61 | 65.42 | 60.67 | 44.06 | 40.93 | 30.42 | 48.60 | a | ||||||||||
1966 | 23.03 | 24.39 | 39.10 | b | 47.21 | a | 56.52 | 63.57 | 71.39 | 64.19 | 58.30 | 43.60 | a | 37.38 | a | 24.70 | a | 46.11 | ||||||||
1967 | 22.74 | 31.48 | a | 41.23 | 48.31 | a | 51.67 | j | 62.90 | 68.35 | 64.74 | 58.03 | a | 44.16 | 37.90 | 26.93 | a | 46.07 | a | |||||||
1968 | 28.65 | 32.62 | 36.26 | 45.37 | 55.81 | 63.76 | a | 63.97 | 63.19 | 56.30 | 46.33 | a | 36.67 | 26.27 | a | 46.27 | ||||||||||
1969 | 30.24 | b | 29.68 | 30.77 | 46.43 | 55.29 | 63.77 | 68.67 | a | 69.87 | 60.24 | a | 47.48 | 34.33 | 29.94 | 47.23 | ||||||||||
1970 | 26.19 | 30.18 | 32.00 | a | 44.60 | 54.55 | 63.24 | a | 68.45 | 67.23 | a | 60.28 | a | 44.10 | 32.77 | 32.68 | 46.36 | |||||||||
1971 | 29.10 | 30.04 | 39.94 | 46.00 | 55.32 | 63.43 | 68.32 | 63.32 | 59.10 | 49.35 | 37.30 | 31.90 | 47.76 | |||||||||||||
1972 | 29.81 | 30.10 | 43.29 | 48.43 | 55.93 | a | 63.71 | b | 67.61 | 64.32 | 60.20 | 50.87 | 33.53 | 28.06 | 47.99 | |||||||||||
1973 | 26.42 | 29.86 | 38.10 | 41.00 | 53.29 | 61.67 | 66.52 | 64.39 | 59.00 | 45.06 | 36.73 | 27.13 | 45.76 | |||||||||||||
1974 | 27.45 | 28.43 | 40.97 | 49.50 | 58.31 | e | 65.87 | 67.32 | 64.19 | 56.03 | 49.55 | 36.57 | 27.83 | a | 47.67 | |||||||||||
1975 | 28.06 | 30.75 | 36.13 | 39.83 | 50.32 | 62.40 | 64.68 | 64.48 | 55.37 | 46.35 | 32.37 | 25.58 | 44.69 | |||||||||||||
1976 | 23.00 | 32.97 | 38.58 | 45.70 | 51.77 | 66.07 | a | ----- | z | 66.45 | 57.17 | 42.06 | 27.83 | ----- | z | 45.16 | b | |||||||||
1977 | 26.13 | a | 27.79 | 33.81 | 49.87 | 57.77 | 68.07 | 69.48 | 71.80 | a | 65.53 | 49.48 | 35.40 | 31.45 | 48.88 | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.85 | 29.87 | 36.82 | 46.44 | 54.90 | 63.90 | 67.61 | 65.88 | 59.66 | 46.98 | 35.51 | 28.76 | 46.93 | |||||||||||||
S.D. | 3.07 | 3.12 | 3.54 | 2.76 | 2.35 | 2.46 | 1.83 | 2.49 | 2.50 | 2.75 | 2.91 | 2.72 | 1.18 | |||||||||||||
SKEW | -0.52 | -0.61 | -0.17 | -0.91 | -0.65 | 0.18 | 0.10 | 0.79 | 0.24 | -0.25 | -0.70 | 0.15 | -0.33 | |||||||||||||
MAX | 30.24 | 36.29 | 43.29 | 49.87 | 58.31 | 68.97 | 71.39 | 71.80 | 65.53 | 50.87 | 40.93 | 33.42 | 48.88 | |||||||||||||
MIN | 19.48 | 22.17 | 30.67 | 39.83 | 50.10 | 58.45 | 63.97 | 62.19 | 55.37 | 42.06 | 27.83 | 24.70 | 44.69 | |||||||||||||
YRS | 18 | 19 | 19 | 19 | 18 | 19 | 18 | 19 | 19 | 19 | 19 | 18 | 16 |